local utils = require("gray_utils")
local path = "/opt/taobao/tengine/conf/gray_strategy/"
local entries , m = utils.readdir(path)
if entries then
    for _, fn in ipairs(entries) do
        if utils.is_dir(path .. fn) and string.match(fn, "gray") then
            require(string.format("%s.engine_conf", fn))
        end
    end
end
